1 From the Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy (SN); IRCCS-Don Carlo Gnocchi Foundation, Milan, Italy (SN, CA); Department of Mental and Physical Health and Preventive Medicine, University of Campania "Luigi Vanvitelli", Napoli, Italy (F. Gimigliano); Department of Rheumatology, Physical Medicine and Rehabilitation, University Hospital Center "Sestre Milosrdnice", Zagreb, Croatia (F. Grubišić); School of Health & Life Sciences, Glasgow Caledonian University, Cochrane Global Ageing, Glasgow, Scotland (TH); Department of Physical and Rehabilitation Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria (EI); University of Otago, Dunedin, New Zealand (WL); Centre for Health and Social Economics, National Institute for Health and Welfare, Helsinki, Finland (AM); Hannover Medical School, Institute for Epidemiology, Social Medicine and Health System Research, Integrative Rehabilitation Research Unit, Hannover, Germany (TM); Department of Rehabilitation Medicine, University of Malaya, Kuala Lumpur, Malaysia (JPE); Department of Rehabilitation Medicine, PNS Shifa Hospital, DHA II, Karachi, Pakistan (FAR); and Physical and Rehabilitation Medicine, University Hospitals Leuven, Leuven, Belgium (CK).